MCP73812

MCP73811/2 Simple, Miniature Single-Cell, Fully Integrated Li-Ion / Li-Polymer Charge Management Controllers Features Complete Linear Charge Management Controller - Integrated Pass Transistor - Integrated Current Sense - Integrated Reverse Discharge Protection Constant Current / Constant Voltage Operation with Thermal Regulation High Accuracy Preset Voltage Regulation: + 1% Voltage Regulation: 4.20V Selectable Charge Current: - MCP73811: 85 mA / 450 mA Programmable Charge Current: - MCP73812: 50 mA - 500 mA Minimum External Components Required: - MCP73811: 2 Ceramic Capacitors - MCP73812: 2 Ceramic Capacitors and 1 Resistor No Preconditioning No End-of-Charge Control No Undervoltage Lockout (UVLO) Automatic Power-Down when Input Power Removed Active High Charge Enable Temperature Range: - -40°C to +85°C Packaging: - 5-Lead SOT-23 Description The MCP73811/2 devices are linear charge management controllers that are designed for use in space limited and cost sensitive applications. The MCP73811/2 provide specific charge algorithms for single cell Li-Ion or Li-Polymer battery to achieve optimal capacity in the shortest charging time possible. Along with its small physical size, the low number of external components required make the MCP73811/2 ideally suited for portable applications. For applications charging from a USB port, the MCP73811 adheres to all the specifications governing the USB power bus. The MCP73811/2 employ a constant current/constant ...